Yeah, basically, the black ones are the ground wires, the colored ones are your signal wires. One of each goes on each microswitch. The connector end of the harness just goes in the same place your jlf one did. For reinstalling the c-clip, you might want to remove your microswitches by just unscrewing them, you have to really push on it to get it back on and if you’re using a tool and it slips, you might damage one of the levers.
If you have it installed and only one direction is registering (probably down), you connected the harness to the pcb upside down. Just turn over the connector and plug it in again. I’ll take a look at mine when I get off work and post which color is which signal wire, though it might not be universal for every harness.